Outdoor air pollution causes 3.3 million premature deaths a year, mainly in Asia. And without policies to cut particulate pollution from traffic, industry and home biofuels, the deaths could double by 2050.

An ancient form of energy: a wood pellet manufacturing facility in upstate New York.
thewildcenter/flickrSeptember 16, 2015

Most of the energy that fuels our lives comes from plants. Whether it is a fossil fuel that was formed hundreds of millions of years ago or the food we eat, all carbon-borne energy has its ultimate origins…

Electricity from wood? We have the power.
Pixelbliss/ShutterstockSeptember 26, 2014

When we think of renewable energy, it’s easy to picture spinning wind turbines or rooftop solar panels. But what about bioenergy? While wind and solar are now well established – in South Australia wind…